dislike.DislikeAnalyzer Maven / Gradle / Ivy
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/*
* Copyright 2022 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package dislike;
import hct.Hct;
/**
* Check and/or fix universally disliked colors.
*
* Color science studies of color preference indicate universal distaste for dark yellow-greens,
* and also show this is correlated to distate for biological waste and rotting food.
*
*
See Palmer and Schloss, 2010 or Schloss and Palmer's Chapter 21 in Handbook of Color
* Psychology (2015).
*/
public final class DislikeAnalyzer {
private DislikeAnalyzer() {
throw new UnsupportedOperationException();
}
/**
* Returns true if color is disliked.
*
*
Disliked is defined as a dark yellow-green that is not neutral.
*/
public static boolean isDisliked(Hct hct) {
final boolean huePasses = Math.round(hct.getHue()) >= 90.0 && Math.round(hct.getHue()) <= 111.0;
final boolean chromaPasses = Math.round(hct.getChroma()) > 16.0;
final boolean tonePasses = Math.round(hct.getTone()) < 65.0;
return huePasses && chromaPasses && tonePasses;
}
/** If color is disliked, lighten it to make it likable. */
public static Hct fixIfDisliked(Hct hct) {
if (isDisliked(hct)) {
return Hct.from(hct.getHue(), hct.getChroma(), 70.0);
}
return hct;
}
}